User icons changing

As you may have noticed, that gray icon displayed to the left of all user comments is finally gone. Replaced by another gray icon. That's what I call progress.

Fortunately, that's not the whole story. There is not just one gray icon, there are 3 of them. One for boys, one for girls and the last one for the undecided. Behold:

Still not the whole story. You can now use your own icons. And it will be displayed not just next to all your comments, but a larger version will be present on all your icon and cursor set pages. Clicking on it will take visitors to your profile. Neat?

What's the catch?

There is one. There are very strict requirements on how the user icon may look like. (Scroll down to read the section about Icons.) Now, there also is a tutorial.